제출 #1064254

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1064254		not_amir	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	1 ms	1112 KiB

books

#include <bits/stdc++.h>

#include "books.h"

using namespace std;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
//     g++ books_sample.cpp sample_grader.cpp
// in this folder.
//

typedef long long ll;

void solve(int N, int K, long long A, int S) {
    // TODO implement this function
    vector<ll> x(N + 1);
    ll sum = 0;
    for(int i = 1; i <= K; i++)
        x[i] = skim(i);
    if(sum > 2 * A)
        impossible();
    if(sum >= A){
        vector<int> ans(K);
        for(int i = 1; i <= K; i++)
            ans[i - 1] = i;
        answer(ans);
    }
    int l = K + 1, h = N + 1, a = N;
    while(l < h){
        int mid = (l + h) / 2;
        if(skim(mid) < A)
            l = mid + 1;
        else{
            a = mid;
            h = mid;
        }
    }
    for(int i = 0; i < K; i++)
        x[a - i - 1] = skim(a - i - 1);
    for(int i = 0; i < K; i++){
        ll sum = 0;
        vector<int> ans;
        for(int j = 0; j < K - i; j++){
            sum += x[j];
            ans.push_back(j + 1);
        }
        for(int j = 0; j < i; j++){
            sum += x[a - j - 1];
            ans.push_back(a - j - 1);
        }
        if(sum >= A && sum <= 2*A)
            answer(ans);
    }
    impossible();
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20